Measuring-pump.



W. H. WARD.

MEASURING PUMP.

APPLICATION FILED 00124, 1913.

1 l l 7,729. Patented Nov. 17, 1914.

2 SHEETS-SHEET 1.

s@ j H...

ATTORNEY8 W. H. WARD.

MEASURING PUMP.

APPLIOATION FILED 00T.4.191s.

1.1 7,729. Patented Nov. 17, 1914.

2 SEBETS-SHEET 2.

UNITED STATES PATENT OFFICE.

WILLIAM HENRY WARD, OF CUMBERLAND, MARYLAND.

MEASURING-PUMP.

Application filed. October 4, 1913.

1To all whom it may concern:

and the object thereof is to provide a. simple, Ystrong and inexpensive measuring pump which will deliver different quantities of liquid by a simple manipulation of the pump. I obtain this object by providing a pump of the reciprocating type, the piston rod of which has means adapted to engage indicating means carried by an arm associated With the cylinder whereby different quantities of liquid can be made to be delivered bythe pump.

The invention consists of the construction and combination of parts to be more fully described hereinafter and fully set forth in the claims.

Reference is to be had to the accompanying drawings forming a part of this Speciication, in whichli e charactersA indicate corresponding parts in all the views and in which:

Figure l is a side elevation of an embodiment of my invention partly in section showing the details of construction; Fig. 2 is a plan view of the same; Fig. 3 is a section on the line 3 3, Fig. 1; and Fig. 4 is an enlarged section on line 4.-4 of Fig. 1.

Referring to the drawings, 5 represents a cylinder mounted radially on an adequate base 6 in any suitable Way. One end of the cylinder is provided with an inlet pipe 7, provided with a check Valve 8 and having its end extending into the receptacle 9 which carries the supply and is shown in dotted lines in Fig. 1. The same end of the cylinder is also provided with an outlet or delivery pipe 10, also provided with a check valve 11. The purpose of these check valves is to prevent outflow through the intake pipe 7 when the piston 12 is on its delivery stroke,

Specification of Letters Patent.

Patented Nov. 17, 1914.

serial No. 793,368.

and through the delivery pipe 10 when the piston 12 is on its suction stroke.

The piston 12 is provided with a piston rod 13 of angular cross section projecting through a longitudinal aperture 14 provided 1n the outside end of, the piston, whereby the rod 13 is constrained to reciprocate only. The projecting end of the rod is provided with a handle 15 by means of which the piston 12 is reciprocated in the cylinder 5. The rod 13 on one of its sides is provided with projections 16 of varying heights. The said projections increase in height from the piston to the handle, the purpose of which will appear hereinafter. The rod 13 also projects through a central aperture of a member 17 secured in any suitable way to the cylinder. The shape of the aperture in the member 17 is similar to the cross section of the rod 13. The member 17 is also pro` vided with a slot 18 in alinement with the projections 16 and through which the same can slide without interference. The member 17 at the face contacting with the end of the cylinder is provided with an annular recess 19, a portion of which recess is partly eliminated by a cut-out 20 formed in the lateral surface of the member 17, through which cut-out projects the arm 21 engaged in the recess 19. The collar 22 formed by the recess 19 engages the central aperture 23 of the arm 21, and on which collar said arm 21 is adapted to rotate. As seen in Figs. 1 and 2 the arm 21 is mounted between the end of the cylinder and the member 17, and is mounted to rotate on the collar 22 of the said member.

The end of the arm extending above the lateral surface of the cylinder is provided with a longitudinal groove 24 disposed radially with reference to the center of the cylinder and engaged by ins 25 secured in a pointer 26, whereby said pointer is mounted to slide in the groove 24. (See Figs. 1 and 3.) The pointer 26, a portion of which is bent laterally extending parallel to the elements of the lateral surface of the cylinder, is adapted to engage radially disposed notches 27 provided on a sector 28 secured,

preferably, to the lateral surface of the cylinder. One of the pins is provided with a head whereby the pointer can be moved in the groove 24, thereby bringing it in engagement with the notches o-f the sector or isengaging it from the same. When the pointer 26 is made to engage a notch on the sector, the arm 21 is locked to the cylinder.

The' arm 21 at the central aperture 23 is provided with radial notches l29 0fL different depths. These notches 29 are brouvht in alinement'with the projections 16 on the rod when the pointer 26 is made to engage the notches 27 in the sector, each of the notches of the sector bringing a predetermined;A

notch 29 into alnement with the projections.

projections 16, according tov its depth, will' piston whenl the po-inter engages a notch.

The use of vmy device is as follows: The piston 12, by means of the handle 15, is made to move toward the end where the arm 21'is positioned, thus'illing the cylinder 5 completely with the liquid through the inlety pipe 7. B means of the pointer 26 the arm 21 is locliedy into the position for delivering the desired quantity of liquid. As, for example, as shown in Flg.- 4, the pointer places the arm 21 for deliveringone quart. The piston 12 is then forced toward the oppositel` end of the cylinder until the same is prevented from further movement by the engagement of the roper projection with the arm 21. It is un erstood that the proper position of the projection 16 on the rod 13 is determined by the voluminal displacement of the iston in the cylinder. It is understood t at fractionalparts of the total volume ofthe cylinder can be `delivered without completely filling the cylinder every time, in which case the arm 21 will be displaced accordingly to obtain the desired amount of liquid.

Having vthus described my invention, I claim as new and desire to secure by Letters Patent:

1. In ameasuring pump, a cylinder having a valve-controlled inlet and a valve-controlled outlet at one end thereof; an arm pivotally mounted at the opposite end of the cylinder and aXial with the same, said arm having a radial slot at its free end; a pointer mounted to slide in-said slot; a sector on the lateral surface of the cylinder havingA notches adapted to be engaged by said The notch 29 in alinement with the 'heights on said. rod, t e height of the projections increasing from the piston toward the projecting end ofthe rod, said arm havingV radially disposed notches of different depths, each adapted to be brought in alinement with said projections b the engagement of the pointer with t e notches in the .sector and whereby the alining notches will only let pass the projections on the rod having their height less than the depth of the notch inalinement with the projections, whereby a predetermined amount of liquid will bedelivered by the movement of the piston.

2. In ajmeasuring pump, a cylinder having a valve-'controlled inletand a valve-controlled outlet at one end thereof; an arm pivotally mounted atthe opposite end of the cylinder and in the axis of the same; a. pointer slidably mounted on said arm;

lmeans on the cylinder adapted to be engaged by said pointer and whereby said' arm can be locked to the cylinder at dierent predetermined positions; a piston in the c'ylinder; an angular piston rod projectingv through the -end of the cylinder andthe arm; projectlons on the Asame side-of said rod and in alinement with each other, said projections being of varying heights, the

eight ofwhichrejections` increases from the lpiston towardp the projecting end of the rod, said arm having radially disposed notches of different depths, .each'adapted to be brought in alinement with said alinin projections by the engagement of sai pointer with the means on the cylinder whereby the movement of the piston inthe cylinder is controlled. 3. In a measuring pump, .a cylinder-having a valve-controlledinlet and a valve-controlled outlet at one end; a piston in the cylinder; a iston rod of angular cross section projecting through the opposite end of the cylinder; a member on saidv piston rod and secured vto saidv cylinder whereby said piston rod is constrained to reciprocate only; an arm rotatably mounted in said member between the sameand the end of the cylinder; a pointer associated with said arm and slidably mounted in the same; a sector on said cylinder having meansadapted to be engaged by the pointer .and whereby -said arm is maintained 'inkdiiferentl predetermined positions; alining projections of different heights on the same side of the'rod,

said,` projections increasing in hei ht from said rejection, end said arm having radially isposed slots of di'erent depths, each adapted to be brou ht in alinement with said projections by t e engagement of said pointer with the means in the sector and whereby the movement of the piston in the cylinder is controlled, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of 10 two subscribing witnesses.

WILLIAM HENRY WARD.

Witnesses:

JAMES C. Smuvnn, NnLLm BRADY. 

